/Engine/Source/Developer/LauncherServices/Public/ILauncherProfileManager.h
Return a list of all build build targets for the current project that need to be specified explicitly via -target= If a build target isn't in the list, it does not need to be specified (and BuildTarget can be an empty string)
const [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & GetAllExplicitBuildTargetNames() const